Seo Yi-kyung (Lee Yo-won), an entrepreneur with both ability and financial resources, is calm and passionate. She has strong ambitions and goals. In order to achieve her goals, she uses Lee Se-jin (Kim Yoo-jin), who is eager to escape from a difficult life, and changes herself and the other person without realizing it. The queen of gold, Seo Yi-kyung, Park Gun-woo (Jin Goo), who loves Seo Yi-kyung, and the ambitious Lee Se-jin, two women and one man, are engaged in a fierce war to become the master of the sleepless greedy flames.